Reviewers: ,
Message:
From Jan-Peter Voigt, please review:
Hello list,
sorry for resending this, it might get lost, because I simply answered
to another thread with another subject.
now, we have a book-predicate and we are dealing with books in scheme.
Then we might want to set a header after creating a book.
There is a function ly:score-set-header!, which I copied and adapted for
the Book-class.
This patch compiled and works with the following snippet.
--snip--
\version "2.15.32"
bk = \book {
\score {
\relative c' {
c4 e g b
}
}
}
#(let ((bh (eval-string "(define-module (a b))")))
(eval '(define title "Hallo") bh)
(ly:book-set-header! bk bh))
\book { \bk }
--snip--
Is this helpful for lily-devel?
And is there another (better) way of creating a module (for header
generation) on the fly in scheme?
Description:
add ly:book-set-header!
Add a scheme function ly:book-set-header! like ly:score-set-header!
Function is copied from score-scheme.cc to book-scheme.cc,
setting public member var header_ in class Book.
Please review this at http://codereview.appspot.com/5720062/
Affected files:
M lily/book-scheme.cc
Index: lily/book-scheme.cc
diff --git a/lily/book-scheme.cc b/lily/book-scheme.cc
index
7f1026a3e79239c83a95c6144c47427adda4f5f1..ae505af3184b422f4c34ff9308f984b35acc4f19
100644
--- a/lily/book-scheme.cc
+++ b/lily/book-scheme.cc
@@ -156,6 +156,19 @@ LY_DEFINE (ly_book_header, "ly:book-header",
return b->header_ ? b->header_ : SCM_BOOL_F;
}
+LY_DEFINE (ly_book_set_header_x, "ly:book-set-header!",
+ 2, 0, 0, (SCM book, SCM module),
+ "Set the book header.")
+{
+ LY_ASSERT_SMOB (Book, book, 1);
+ SCM_ASSERT_TYPE (ly_is_module (module), module, SCM_ARG2, __FUNCTION__,
+ "module");
+
+ Book *b = unsmob_book (book);
+ b->header_ = (module);
+ return SCM_UNSPECIFIED;
+}
+
LY_DEFINE (ly_book_scores, "ly:book-scores",
1, 0, 0, (SCM book),
"Return scores in @var{book}.")
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